Awesome guide o/ Really helpful :3
If I may add,
There is another way to reduce the file size of .png images without affecting the quality (I haven't noticed a difference).
When you're done making your signature, Just use 'Save As', Select .png as your format and do this -
**(This screenshot is NOT
-Can't take Screenshots like normal people- Q~Q
Dun judge me D:
It reduces the size drastically.
Still ALMOST at the limit. Well anything we can do to keep it below right? :c